Allow other things to share access to this file under windows

Signed-off-by: Kimball Thurston <kdt3rd@gmail.com>
kdt3rd · Sep 14, 2024 · 4301a9a · 4301a9a
1 parent 2674e3f
commit 4301a9a
Showing 1 changed file with 8 additions and 4 deletions.
diff --git a/src/lib/OpenEXRCore/internal_win32_file_impl.h b/src/lib/OpenEXRCore/internal_win32_file_impl.h
@@ -303,12 +303,16 @@ default_init_read_file (exr_context_t file)
     {
 #if defined(_WIN32_WINNT) && (_WIN32_WINNT >= _WIN32_WINNT_WIN8)
         fd = CreateFile2 (
-            wcFn, GENERIC_READ, FILE_SHARE_READ, OPEN_EXISTING, NULL);
+            wcFn,
+            GENERIC_READ,
+            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+            OPEN_EXISTING,
+            NULL);
 #else
         fd = CreateFileW (
             wcFn,
             GENERIC_READ,
-            FILE_SHARE_READ,
+            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
             NULL,
             OPEN_EXISTING,
             FILE_ATTRIBUTE_NORMAL, /* TBD: use overlapped? | FILE_FLAG_OVERLAPPED */
@@ -352,14 +356,14 @@ default_init_write_file (exr_context_t file)
         fd = CreateFile2 (
             wcFn,
             GENERIC_WRITE | DELETE,
-            0, /* no sharing */
+            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
             CREATE_ALWAYS,
             NULL);
 #else
         fd = CreateFileW (
             wcFn,
             GENERIC_WRITE | DELETE,
-            0, /* no sharing */
+            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
             NULL,
             CREATE_ALWAYS,
             FILE_ATTRIBUTE_NORMAL, /* TBD: use overlapped? | FILE_FLAG_OVERLAPPED */